Hey fellow planeswalkers! When building your deck in Magic: The Gathering Arena, always make sure to have a good balance of creatures, spells, and lands. Focus on a clear strategy or win condition to guide your card choices. Don’t forget to include a mix of removal spells and card draw to handle any situation. And most importantly, playtest your deck against different archetypes to fine-tune it. Good luck and may your opening hand always have the perfect curve!